If I select a railroad cargo wagon as the transfer source for inventory mover, the blue corner marks always highlight a rectangle elongated in the north-south direction, even if the cargo wagon is on a west-east rail. This happens even if the cargo wagon is not moving at all. No gameplay effect, but it looks kind of weird. If you can't easily rotate the blue corner markings then perhaps make the markings only highlight a square in the middle third of the cargo wagon.